Don't use it those things are junk...in fact I could get you a couple dozen of them for free.

C-clips bring the suck when you pop one or have to replace gears, axles or a locker/LSD whatever. At the least go with a D44 which can be had for cheap, although I would strongly suggest the Ford 9 because of the low pinion design allowing for more clearance under your vehicle leaving a flatter driveline angle.